CUTTACK: Scientists of Central Rice Research Institute (CRRI), the premier rice research centre, have developed three new high-yielding varieties of rice. The new paddy seeds, CR Dhan 205, CR Dhan 306 and CRR 451, were recently identified by central variety identification committee under the ministry of agriculture for release. Sources said the new varieties were field tested for over three years in different parts of the country and under various climatic conditions. With this, the centre claims to have developed 110 varieties of rice since its inception in 1946. It will be celebrating its 68th foundation day on April 23. "The committee gave its approval for release of the three new varieties last week. These have been developed keeping in mind the changing climatic conditions and requirements of different states," said CRRI director Trilochan Mohapatra.